Trease e Evans Pharmacognosy

´Trease and Evans´ is an encyclopedic reference work on pharmacognosy - the study of those natural substances, principally plants, that find a use in medicine. Its popularity and longevity stem from the book´s balance between classical (crude and pow dered drugs´ characterization and examination) and modern (phytochemisty and pharmacology) aspects of this branch of science, as well as the editor´s recognition in recent years of the growing importance of complementary medicines, including herbal, homeopathic and aromatherapy.